Question

Which of the following is not considered a macroelement?

1) Carbon (C)
2) Calcium (Ca)
3) Potassium (K)
4) Cobalt (Co)

Answer 1

Cobalt (Co) is not a macroelement, while carbon (C), calcium (Ca), and potassium (K) are considered macroelements as they are required in greater amounts in the body.

Step-by-step explanation:

The element that is not considered a macroelement is Cobalt (Co). Macroelements include elements that are required in appreciable amounts in the body, such as carbon (C), calcium (Ca), and potassium (K). These are required to be present in the diet in amounts greater than 1 mg. In contrast, microelements, also known as trace elements, like cobalt (Co), iron (Fe), copper (Cu), and zinc (Zn), are required in smaller quantities, generally in microgram or nanogram amounts.